Question

我有app.js文件：

var express = require('express');
var app = express();
var server = require('http').createServer(app);
var io = require('socket.io')(server);
var mongojs = require('mongojs');
var db = mongojs("mongodb://USER:PASS@SERVER:PORT/DB", []);
var ObjectId = require('mongodb').ObjectID;
var CronJob = require('cron').CronJob;
var request = require('request');
var fcm = require('./routes/fcm');

var bodyParser = require('body-parser');
app.use(bodyParser.json()); // support json encoded bodies
app.use(bodyParser.urlencoded({ extended: true })); // support encoded bodies
app.use(express.static(__dirname + '/src'));

require('./routes/sockets')(app, io, mongojs, db, ObjectId, CronJob, request, fcm);
require('./routes/userServer')(app, io, mongojs, db, ObjectId, CronJob, request, fcm);
require('./routes/ridesServer')(app, io, mongojs, db, ObjectId, CronJob, request);
require('./routes/offersServer')(app, io, mongojs, db, ObjectId, CronJob, request);
require('./routes/notificationsServer')(app, io, mongojs, db, ObjectId, CronJob, request);

server.listen("8080", function() {
  console.log("Connected to db and listening on port 8080");
});

如您所见，我在app.js文件中定义主要模块，然后将其作为“依赖关系”传输到每个路径页面。

因为我有/routes/sockets.js页面，我认为将socket.io连接放在那里并处理从客户端发出的每个动作都是明智的，如下所示：

/routes/sockets.js文件：

module.exports = function(app, io, mongojs, db, ObjectId, CronJob, request) {

  io.on('connection', function(socket){

    console.log('a user connected');
    socket.on('disconnect', function(){
      console.log('user disconnected');
    });

    socket.on("To server", function(data) {
      console.log(data);
    });

  });

};

有（routes / sockets.js）我可以像这样处理来自客户端的操作：

socket.emit("To server", "The Data");

这是一个正确的放置位置吗？我做得好还是应该纠正？

感谢。

Answer 1

我通常使用一个函数创建一个新文件，该函数接受 io 对象并吐出所有 socket 指令，就像这样

我的示例应用程序/服务器/index.js


const express = require("express");
const cors = require("cors");
const http = require("http");
const socketio = require("socket.io");
const PORT = process.env.PORT || 5000;
const app = express();
const socketHolder = require("./utils/sockets"); // this is the file I put my sockets in
const server = http.createServer(app);

const io = socketio(server, {
  cors: {
    origin: "http://localhost:3000",
    methods: ["GET", "POST", "PUT", "DELETE"],
    allowedHeaders: "*",
  },
});

const connectDB = require("./config/db");

socketHolder(io);

// Database connection
connectDB()

// ... additional router stuff

我的socketHolder util 文件

// All requires at the top of the file

const socketHolder = (io) => 
  io.on("connection", (socket) => {
    socket.on("doSomething", () => {
      console.log("Do something")
    })
    // ...etc
  })

在Node.js后端放置socket.io连接的正确位置在哪里？

1 个答案: